Flight crew of an large transport declared an emergency and returned to land after experiencing an abnormal aircraft stall indication upon becoming airborne.

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Attributes
ACN	327972
Time
Date	199602
Day	Mon
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : msp
State Reference	MN
Altitude	agl bound lower : 50 agl bound upper : 2000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : msp tower : msp
Operator	common carrier : air carrier
Make Model Name	Commercial Fixed Wing
Operating Under FAR Part	Part 121
Flight Phase	climbout : initial descent other landing other
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : second officer
Qualification	pilot : atp pilot : flight engineer
Experience	flight time last 90 days : 200 flight time total : 8500 flight time type : 200
ASRS Report	327972
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Events
Anomaly	aircraft equipment problem : critical other anomaly other
Independent Detector	aircraft equipment other aircraft equipment : unspecified other flight crewa
Resolutory Action	flight crew : declared emergency other other
Consequence	Other
Supplementary
Primary Problem	Aircraft

Narrative:

On takeoff from msp airport on routine passenger flight, the stall warning shaker activated several times as the pitch angle was rotated through 5 degrees. Cleaned up aircraft and climbed to a safe altitude. Performed a controllability check by slowing to normal approach speeds. The stick shaker came on at well above normal speeds for 0 degree, 2 degree, and 5 degree flap settings. Otherwise aircraft control was normal. Declared an emergency and made uneventful landing.

Original NASA ASRS Text

Title: FLC OF AN LGT DECLARED AN EMER AND RETURNED TO LAND AFTER EXPERIENCING AN ABNORMAL ACFT STALL INDICATION UPON BECOMING AIRBORNE.

Narrative: ON TKOF FROM MSP ARPT ON ROUTINE PAX FLT, THE STALL WARNING SHAKER ACTIVATED SEVERAL TIMES AS THE PITCH ANGLE WAS ROTATED THROUGH 5 DEGS. CLEANED UP ACFT AND CLBED TO A SAFE ALT. PERFORMED A CONTROLLABILITY CHK BY SLOWING TO NORMAL APCH SPDS. THE STICK SHAKER CAME ON AT WELL ABOVE NORMAL SPDS FOR 0 DEG, 2 DEG, AND 5 DEG FLAP SETTINGS. OTHERWISE ACFT CTL WAS NORMAL. DECLARED AN EMER AND MADE UNEVENTFUL LNDG.

Data retrieved from NASA's ASRS site as of July 2007 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.